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Q1. View the Exhibit and examine the setting for a table.
Which statement is true about the PCTFREE setting for the table?
A. It sets the minimum percentage of a data block to be reserved to contain chained rows from other blocks.
B. It sets the minimum percentage of a data block to be reserved as free space before the server prevents inserts into the block.
C. It sets the minimum percentage of a data block to be reserved to contain the bitmap used to maintain the free block information.
D. It sets the minimum percentage of a block that can be used for row data plus overhead before new rows are added to the block.
Answer: B
Q2. Your test database is configured to run in NOARCHIVELOG mode. One of the data files in the USERS tablespace is lost due to a media failure. You notice that all the online redo logs have been overwritten since the last backup.
What would you do to recover the data file?
A. Take the USERS tablespace offline and re-create the lost data file
B. Shutdown the instance, restore the data file from the last consistent backup and restart the database instance
C. Shutdown the instance, restores all the database files from the last consistent backup and restart the database instance
D. Take the USERS tablespace offline, restore all the data files of the USERS tablespace from the last consistent backup and make the tablespace online
Answer: C
Q3. Your database is in shutdown state. What will happend if you issue next command:
SQL> startup
A. instance will started
B. instance started and DB is mounted
C. instance started, DB opened and finally mounted
D. instance started, DB mounted and finally opened
Answer: D
Q4. Which two statements are true regarding undo tablespaces? (Choose two.)
A. The database can have more than one undo tablespace
B. The UNDO_TABLESPACE parameter is valid in both automatic and manual undo management
C. Undo segments automatically grow and shrink as needed, acting as circular storage buffer for their assigned transactions
D. An undo tablespace is automatically created if the UNDO_TABLESPACE parameter is not set and the UNDO_MANAGEMENT parameter is set to AUTO during the database instance start up
Answer: AC
Q5. These are points that describe the contents of different memory components:
1: Descriptive information or metadata about schema objects that are queried by using SQL statements
2: The runtime area for data manipulation language (DML) or data definition language (DDL) statements
3: Results of SQL queries and PL/SQL functions
4: Executable forms of SQL cursors, PL/SQL programs, and Java classes
5: The information necessary to reconstruct changes made to the database by a transaction
Which of these will be stored in the Shared Pool if the necessary configurations are done?
A. 1 and 2
B. 2 and 5
C. 1,3, and 4
D. 3,4 and 5
E. 1,2,3 and 4
Answer: C
Q6. In your database instance, the STATISTICS_LEVEL initialization parameter is set to BASIC.
What is the impact of this setting?
A. Optimizer statistics are collected automatically.
B. Only timed operating system (OS) statistics and plan execution statistics are collected.
C. The snapshots for the Automatic Workload Repository (AWR) are not generated automatically.
D. Snapshots cannot be collected manually by using the DBMS_WORKLOAD_REPOSITORY package.
E. The Oracle server dynamically generates the necessary statistics on tables as part of query optimization.
Answer: C
Q7. Why does performance degrade when many UPDATE, INSERT or DELETE statements are issued on a table that has an associated bitmap index?
A. The DML operations re-create the bitmap index blocks
B. The bitmap index is rebuilt automatically after a DML operation
C. The smallest amount of a bitmap that can be locked is a bitmap segment
D. Additional time is taken to remove NULL values from the bitmap index after a DML operation
Answer: C
Q8. You notice that the performance of the database has degraded because of frequent checkpoints.
Which two actions resolve the issue? (Choose two.)
A. Disable automatic checkpoint tuning
B. Check the size of the redo log file size and increase the size if it is small
C. Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor
D. Decrease the number of redo log members if there are more than one redo log members available in each redo log group
Answer: BC
Q9. You are managing an Oracle Database 11g database running in ARCHIVELOG mode. The Flash Recovery Area is specified as the destination for the archived redo log files. You notice this warning in the alert log file:
ORA19815: WARNING: db_recovery_file_dest_size of 3221225472 bytes is 100.00% used, and has 0 remaining bytes available.
What would you do to reclaim the used space in the Flash Recovery Area? (Choose two.)
A. Back up the Flash Recovery Area.
B. Decrease the retention time for the database backup and flashback log files.
C. Manually delete all the archived log files from the Flash Recovery Area by using operating system (OS) commands.
D. Manually delete all the expired backup sets from the Flash Recovery Area by using operating system (OS) commands.
Answer: AB
Q10. You receive complaints from users regarding the high waiting time for their transactions. On investigation, you find that some users are not committing their transactions though they are not performing any activity for a long time. As a result, SQL statements need to wait for rowlevel locks.
Which two actions could you take to prevent this locking problem in the future? (Choose two.)
A. Decrease the IDLE_TIME resource limit in the profile assigned to the blocking users.
B. Use Database Resource Manager to automatically log out sessions that block others and are idle
C. Set the limit in the profile of blocking users to control the number of blocks to be accessed in a session.
D. Decrease the maximum number of interested transaction list (ITL) slots for the segments on which the blocking user performs the transaction.
Answer: AB